Erosion processes due to energetic particle-surface interaction

Journal Article · Thu May 20 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3447990· OSTI ID:21362063

Schmid, K; Roth, J ^[1]

---

1. Max-Planck-Institut fuer Plasmaphysik, EURATOM Association, Boltzmannstrasse 2, 85748 Garching (Germany)

The interaction of the fast particles from the hot plasma of a magnetic confinement fusion experiment with the first wall is one of the most challenging problems toward the realization of a fusion power plant. The erosion of the first wall by the fast particles leads to life time limitations and the radiative cooling of the plasma by the eroded impurity species lowers the energy confinement. Apart from these obvious consequences also the trapping of large quantities of the fuelling species (deuterium and tritium) in re-deposited layers of the eroded species poses a problem due to accumulation of large radiative inventories and plasma fuelling inefficiency. The source of all these challenges is the erosion of first wall components due to physical sputtering, chemical erosion and radiation enhanced sublimation. This paper will give an overview about the physical principles behind these erosion channels.

• OSTI ID: 21362063
• Journal Information: AIP Conference Proceedings, Vol. 1237, Issue 1; Conference: 3. ITER international summer school, Aix-en-Provence (France), 22-26 Jun 2009; Other Information: DOI: 10.1063/1.3447990; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DEUTERIUM
EROSION
FIRST WALL
HOT PLASMA
MAGNETIC CONFINEMENT
PLASMA IMPURITIES
RADIATIVE COOLING
SPUTTERING
SUBLIMATION
THERMONUCLEAR POWER PLANTS
THERMONUCLEAR REACTORS
TIME LIMITATIONS
TRITIUM
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CONFINEMENT
COOLING
EVAPORATION
HYDROGEN ISOTOPES
IMPURITIES
ISOTOPES
LIGHT NUCLEI
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PHASE TRANSFORMATIONS
PLASMA
PLASMA CONFINEMENT
POWER PLANTS
RADIOISOTOPES
STABLE ISOTOPES
THERMAL POWER PLANTS
THERMONUCLEAR REACTOR WALLS
YEARS LIVING RADIOISOTOPES